Navigating the subterranean depths of the Underdark in Baldur's Gate 3 presents players with complex tactical dilemmas and high-stakes rescue missions. Upon arriving at the Grymforge, you will quickly discover that True Soul Nere has been trapped behind a massive cave-in alongside several deep gnome slaves. Time is of the essence in this scenario, as taking too many long rests or leaving the area completely will cause the trapped drow to perish from toxic gas leaks inside the chamber.
Locating the Necessary Explosives
The heavy stone rubble blocking the tunnel cannot be cleared by ordinary physical attacks or basic spells. To break through the barrier, you must explore the surrounding Grymforge area to locate a powerful explosive agent like smokepowder. Deep within a hidden back room guarded by dangerous ooze monsters, you will encounter a gnome named Philomeen who possesses a stash of vial-sized explosives.
Negotiating with Philomeen or taking the powder by force gives you the ideal tool required to clear the path safely. Alternatively, searching the local crates and storage containers might yield standard smokepowder bombs that serve the exact same mechanical purpose. Having these items secured in your inventory is the primary requirement before attempting to deal with the obstacle.
Clearing the Rubble Safely
Once you return to the excavation site, you need to throw the explosive vial or bomb directly at the collapsed pile of stones. It is critical to wait for the nearby deep gnome slaves to move back into defensive positions before detonating the explosive device. Damaging any innocent bystanders with the blast radius will instantly trigger a hostile reaction from the entire camp.
After the gnomes clear the area, use a fire spell or a ranged fire arrow to ignite the powder from a safe distance. The resulting explosion will instantly disintegrate the rock formation and allow the trapped characters to emerge. Properly executing this step ensures that your party can initiate dialogue with the freed drow without starting an accidental brawl.
Navigating the Faction Alliances
Freeing Nere immediately triggers a tense confrontation between the True Soul, the absolute cultists, and the enslaved deep gnomes. Before blowing up the rocks, sneaky players can speak with Elder Brithvar to form a secret alliance against the drow supervisor. Striking a deal with the duergar rebels significantly reduces the difficulty of the impending battle by shifting the balance of power in your favor.
Depending on your chosen narrative path, you can side with Nere to eliminate the rebels or turn against him to save the gnomes. Defeating him allows you to claim his valuable Mind Flayer parasite tadpole and secure his head for the Myconid colony circle reward. Carefully managing your conversation choices determines the long-term story outcomes for the regional factions.
